While the article was short and concise it did not provide any new information. I was expecting to read about specific issues and insight on how these issues might be handled. It would appear that I would have had to sign up for the full study to hopefully get that type of information. It would seem that this article is just a stepping stone to gather personal information for Kubotek's information data base of potential customers. Just a not on my part, there will ALWAYS be interoperability issues between CAD systems as each company that produces CAD software will want their product to be better than the competitions product and that is maintained in the objects attributes and file format. While transfering files store in Parasolid or ACIS "transport" files is done routinely, all of the attributes are stripped away which is what customers don't want. Also, there is the issue of cost. Most smaller companies buy mid-priced CAD software (Solidworks, etc.) as they can justify that cost, NOT the cost of systems like CATIA and NX but companies like UGS need to have features and capabilities to justify the high cost of their product and it is these features that prevent interoperability between CAD systems. Until such time, that there is a single file format (and possibly a single universal 3D kernel) and the difference in one CAD system versus another is the interface to the user and how models are created, there will ALWAYS be interoperability issues.Mike LaCroix